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Kevin Chen
Massachusetts Institute of Technology, Cambridge, MA,
In this thesis, I designed and implemented a delay-tolerant network
stack that allows applications to send messages to other network nodes
when no end-to-end connectivity is present. CafNet, the
Carry-and-Forward Network, is a delay-tolerant network stack with a
CafNet Transport Layer, a CafNet Network Layer, and one or more Mule
Adaptation Layers, corresponding to the traditional transport,
network, and link layers. Nodes can connect to other nodes through a
variety of link mechanisms, and in some cases, the data itself can be
physically carried, such as on a USB key or a PDA. CafNet prioritizes
messages such that data with a higher priority is sent during short
bursts of connectivity. The stack was tested on embedded PC systems
used in cars for the CarTel project to determine its performance.
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